Improved compound railway-rail



WILLIAM B. DUNNING, OF GENEVA, NEW YORK.

Letters Patent N 98,935, dated January 18, 1870.

y IMPRovED comounn RAILWAY-RAIL.

The Schedule referred to in'these Letters Patent and making -parxt'of the `same To all whom lit may concern Beit knownthat I, WILLIAM B. DUNNING, of Geneva, in the county of Ontario, and State of New IYork, have invented certain new and useful Improvements in lCompound Rails; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, makiugpart of this specification, in which- Figures 1 and 2 are plan views of my invention.

Figures 3 and 4 are transverse sections.

Figure 5 isa section of one form of base B.

Figure 6 is a section at the dotted line x, fig. 2.

The object and nature of my invention will be understood by reference to the specification Vand drawings; and;

To enable others to make and use my invention, I

` will describe its construction.

I make my improved rail in two parts, the upper or tread portion A being composed of steel, a superior i quality of iron, or other suitable metal', or alloy of metals, while the base B is made of a cheaper class of iron or steel, and constitutes the flange, by which the rail is secured to the ties.

The tread-rail A is rolled, with projections a at the bottom, over which the ilanges on the base close.

The-base B is rolled, withv flanges b, fig. 5, suf ficiently apart to receive the lower edge of the treadrail,'and may or may not be provided with the supplemental-y side ange shown in figs. 1, 2, 3, and 6.

'.lhe tread-rail is vlaid into the groove between the flanges b, and the base, previously heated, is passed 'through suitable rollers, whiclrcloses the anges over the projections a. As the base cools, the rail is tightly bound bythe contraction of the metal.

The tread-rail A and base B are made of the same length, but are so placed, preparatory'to being rolled together, that the rail projects a suitable distance be-V yond the base at one end, leaving a recess inthe latter, at the opposite end, to receive the projecting end ofthe succeeding rail, as shown in figs. 1 and 2. The

end of each base thus formsa chair yfor the next rail, as they are laid.

To facilitate repairs, every third, fth, or tenth rail,Y

as may be desirable, is provided with a detachable scc# -tion, C, figs. 2 and 6, of the ange b, secured to the inside of the rail by bolts, or otherwise.

When it is desired to remove a rail, the nearest section O is taken up, and the rail pushed aside far enough to pass the adjacent one, when it can be easily withdrawn, to-

gether with the succeeding rails, till the defective one K is reached.

Bythus overlapping the rail and base, I obtain a very secure joint, obviating the necessity of chairs, sh-bars, or joint-ties. I, in fact, provide the treadrail with a continuous chair for its entire length.

On account of the location ofthe sections C on the inside of the rail, the latter cannot be displaced by passing trains.

If it is desired to lighten the tread-railvA, it may K be made otra U-section, as shown in full lines in iig.

l6, and in dotted lines in g. 4.

What I claim as niy invention, and desire to secure by Letters Patent, is-

Providing the inner flange of the base B, at the lap, with a detachable section, C, as .and for the purposes set forth.

WM. B. -DUNNIN G Witnesses:

F. H. CLEMENT, WM. S. LoUGHBonoUGH. 

